Mormons are the elast of my worries, there are several other more dangerous religions who are also political movements to worry about first.
Once we start seeing white shirted tie wearing men on bicycles yelling “Joeseph Smith is great” and blowing themselves up at train stations and forcing Jell-O down the freshly severed necks of the non-believers and making their women wear tents.
Only then I start worrying about the “Mormon Menace”
Marrying several and making them dress like extras from Little House on the Prairie is fine though.
I can see what you mean.
Here’s another way to look at it.
When you say worried I will assume you mean you are worried about threats to the nation. I would agree with you that Islam presents a much more immediate physical threat.
But, how much more important is a man’s, or indeed a Nation’s, soul than his life?
I believe that our eternal souls and the salvation of that soul through Jesus Christ is far more important than our earthly safety and security.
When I see Mormonism through that prism I see the LDS as a far greater threat to America than Islam.